EP 2444964 A1 20120425 - METHOD FOR MANUFACTURING A SOUND ABSORBING BODY AND RESULTING SOUND ABSORBING BODY
Title (en)
METHOD FOR MANUFACTURING A SOUND ABSORBING BODY AND RESULTING SOUND ABSORBING BODY
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES SCHALLAUFNAHMEKÖRPERS UND RESULTIERENDER SCHALLAUFNAHMEKÖRPER
Title (fr)
PROCESSUS DE FABRICATION D'UN CORPS ACOUSTIQUEMENT ABSORBANT ET CORPS ACOUSTIQUEMENT ABSORBANT RÉSULTANT
Publication
Application
Priority
- JP 2010059738 W 20100609
- JP 2009143759 A 20090616
Abstract (en)
A sound-absorbing material is provided which is more effective for the same volume. A sound-absorbing body is formed characteristically by hot-compression molding of a raw material (C) comprises a flexible polyurethane foam to a volume ratio ranging from 1/1.5 to 1/12. In the molding, metal molds (A·B) are heated in an electric furnace up to a set temperature of 180°C; the flexible polyurethane foam of the cell number of 50 is held between the metal molds (A·B), and compressed and heated in the electric furnace in this state at 180°C for 60 minutes; the fixing clamp is removed; and the hot-compressed urethane foam is taken out to obtain in the intended sound-absorbing body.
IPC 8 full level
G10K 11/162 (2006.01); B29C 44/56 (2006.01)
CPC (source: EP KR US)
B29C 44/5636 (2013.01 - EP US); G10K 11/16 (2013.01 - KR); G10K 11/162 (2013.01 - EP KR US); Y10T 428/24273 (2015.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
EP 2444964 A1 20120425; EP 2444964 A4 20120822; EP 2444964 B1 20140507; JP 2011002523 A 20110106; JP 4913847 B2 20120411; KR 101189521 B1 20121011; KR 20120024937 A 20120314; US 2012146259 A1 20120614; US 9230533 B2 20160105; WO 2010147033 A1 20101223
DOCDB simple family (application)
EP 10789408 A 20100609; JP 2009143759 A 20090616; JP 2010059738 W 20100609; KR 20127000218 A 20100609; US 201013378398 A 20100609